135 Hair-pulling puzzles to boost your brainpower--they'll blow your mind

Complex crosswords, cryptic cryptograms, unsolvable Sudoku--they're all here to confound and delight you Unlike other puzzle books for adults, Only the Hardest Puzzles presents the broadest selection of absolute brain busters that makes solving super challenging and super entertaining--even for seasoned puzzle fanatics.

Featuring dozens of epic head-scratchers, Only the Hardest Puzzles goes above and beyond other puzzle books for adults by giving you the most amazing assortment of games to master. You'll also boost your memory and mood while having tons of fun.

This standout among puzzle books for adults features:

• Level up--Put your problem-solving skills to the ultimate test with three epic levels of difficulty, including warm-up, tough, and hard-core challenges.
• Excellent variety--This top choice in puzzle books for adults delivers a wide range of baffling games, including cryptograms, kakuros, word searches, and more.
• Easy to read, hard to solve--Clear, well-designed pages keep this brain-bending book fun and engaging for hours.

Only the Hardest Puzzles isn't like other puzzle books for adults; it's a real challenge